Improvement in loom-shuttles



WILLIAM TUCKER, OF FISKEDALE, MASSACHUSETTS, ASSIGNOR TO HIM- SELF ANDCHARLES F. GROSVENOR, OF SAME PLACE.

IMPROVEMENT IN LOONl-SHUTTLES.

Specification forming part of Letters Patent N0.l40,09@, dated June 17,1873 application filed April 9, 1873.

To all whom it may concern:

Be it known that I, WILLIAM TUCKER, of Fiskedale, in the county ofWorcester, and State of Massachusetts, have invented a certain ImprovedLoom-Shuttle, of which the following is a specification In themanufacture of cotton cloth, especially, a serious troubleis theoccurrence of bad places, or pick-outs in the cloth, where the fillinghas not been properly laid between the sheds of the warp, owing toimperfect decussation, caused by an entangled loose thread or otherobstruction.

This invention relates to mechanism hereinafter described to preventdefective weaving.

A disk, provided with notches in its periphery, and with a perforationto coincide in one position with the tube of the shuttle, is pivoted inthe delivery end of the shuttle. A retaining-spring engages with one ofthe said notches, and holds the disk so that another notch therein ispresented above the top of the shuttle to engage any obstructing threadin the upper shed of the warp. WVhen a thread is thus caught, the diskis thereby turned on its pivot, so as to throw its perforation out ofcoincidence with the shuttle-tube, and, consequently, the filling-threadis held by the disk, and is broken during the completion of the throw ofthe shuttle, and the loom is thus caused to stop, as, in the event ofthe filling becoming exhausted, or in any event, no filling is laid upuntil the defect is remedied.

Figure 1 is a plan view, partly in section, of a loom shuttleillustrating this invention. Fig. 2 is a side view of the same, partlyin vertical longitudinal section. Fig. 3 is a partial longitudinalsection, representing the disk as turned to break the filling.

To carry out this invention any of the ordinary forms of wooden shuttlemay be employed. A short tube, a, for the delivery of the thread isformed on a small disk, b, of variable shape, through which it issecured transversely in the ends of the shuttle, in continuation of theshuttle-tube by a screw or screws, 0. A narrow longitudinal slot is cutvertically through the end of the shuttle, and traversed by a centralperforation, and alongitudinal recesss is cut in the bottom of theshuttle for the reception of the three remaining and principal parts ofthe device. A thin parti-circular metallic disk, 01, is arranged in thefirst-named longitudinal slot, and pivoted by a pin, 6, occupying thetransverse perforation. A spring, f, with a projection, 1, on its upperside, is secured in the recess in the bottom of the shuttle by a screwor screws, 9. A slit, 2, is cut in the tube a for the reception of theedge of the disk, and the latter is formed with a notch, 3, to engagewith the projection 1 of the spring f, and with a perforation, 4, which,when the disk is thus held, is coincident with the bore of the tube, a,and the thread of the cop or bobbin is drawn through both, and throughthe shuttletube, at one operation. The disk is also formed with a squarenotch 5 which may be a saw-kerf, so arranged that when the disk is held,as aforesaid, the notch 5 is presented centrally at the top of theshuttle to engage from either direction of the throw with any depressed.thread in the upper shed of the warp. In this event, the disk is turnedon its pivot 6 against the slight resistance of the spring f, theprojection of which may be received in a stop-notch, 6, a pair of whichare provided to secure the disk as shifted,

and to limit the movements.

The inclined faces of these notches serve also to enable the spring toassist in shifting the disk after the movements are begun. The disk isnicely balanced, so that the retaining force may be very slight. Theobject is to simply hold the disk against. accidental displacement byjar. "When the disk is shifted the passage of the thread is renderedtortuous, and the delivery is thus so obstructed as to cause the threadto be broken immediately by the continued flight of the shuttle. Theloom now stops automatically, as when the filling is exhausted; or, ifit has no stop mechanism, the laying up of filling ceases until theoperator repairs the threads.

It will be observed that the thread is not sheared in this arrangement,but is simply held so as-to cause its breakage; and this will usuallyoccur outside of the shuttle, so as not to necessitate ire-threading.The shuttle is returned to working condition by turning the disk, bymeans of the finger, until the notch 5 is in position, or until theholdingprojection 1 springs into the notch 3.

In lieu of one catch-notch 5, as above described, two or more may beemployed; or the top of the disk may be milled to facilitate resettingit. Other details of construction admit of modification.

The following is claimed as new, namely- The pivoted disk d, providedwith the perforation 4 and notches 3 5, in combination with the tube aand spring f, applied to a loom-shuttle, and operating, substantially asdescribed, to break the filling-thread when defects occur in the fiberbeing woven, as

herein set forth.

WILLIAM TUCKER. Witnesses:

HENRY HAYNES, CHAS. F. GROSVENOR.

